If your prepared to name your cubes SpotlightNN or PointlightNN (where NN = 01 thru 99).

Will the cubes be in a seperately loaded OBJ file (one group per cube) or part of the environment object (again on group per cube) or something else ?

There will need to be some convention to determine the spotlight direction if you expect that to be set automatically (perhaps another cube called SpotlightTargetNN).

Besides direction most of the other light parameters will need defaults in the script (could possibly make use of materials to set the colour).

Now no singing or I'll have to find some Dip ;)